4 x 4 inch Small Square Glass Craft Mirrors Mosaic Tiles. Bulk Wholesale Cheap 12 Pieces per pack. Mirrors are Approximately 1/16 Inch Thick. Hey have smooth finished edges. These are craft mirrors so they can come with slight imperfections. You can paint or etch these mirrors for customization. Mirrors can help turn all your arts and craft projects into something spectacular without spending a lot. Even the smallest mirrors make a big impact in a multitude of craft and home décor projects. We carry craft mirrors in all sizes and shapes. We promise to take extra care in packing your orders!